Caught two of my Betta rutilans having a flare off this afternoon. They can be an aggressive species, so I do have to watch them, but this time it was just all talk.
I just don't know which fish was involved as they are all pretty much identical even the males and females.
This is their tank. It houses around 7 of them I think. One pair, their 20 month old offspring and two separate fish I brought in.
I also still have 20 fry growing out from my original pair. Think they will need a 3ft tank just to themselves!